Shannon Heuberger, University of Arizona (IMAGE) University of Arizona Caption Patrolling the rows of Arizona cotton fields, University of Arizona graduate student Shannon Heuberger takes note of how many bees visit cotton flowers. She discovered that pollinating insects, widely believed to be the key factor in moving transgenic pollen into neighboring crop fields, had a small impact on gene flow compared to human farming activity. Credit Bob Van Deven Usage Restrictions Image may only be used in conjunction with reporting/posting of this news release. Credit must be indicated. License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.